Property Management

Sigwel AG 

Laupen Be · Since 1992

The core activity of SIGWEL AG is the management of a real estate portfolio.

Sihlpark Premium AG 

Schindellegi · Since 2014

Sihlpark Premium AG provides business infrastructure including commercial, office and practice premises, exhibition and retail spaces, and event and catering areas. The offering also includes a business hotel with meeting rooms, a wellness and fitness area, staffed restaurants and parking facilities.

SII Immobilien AG 

Zwingen · Since 1985

SII Immobilien AG manages and leases primarily commercial properties, offering industrial, storage and office rental spaces. The company lists several industrial and commercial properties in Zwingen and acts as a promoter for the Businesspark Laufental & Thierstein.

SII Swiss International Investment AG 

Arbon · Since 2019

SII Swiss International Investment AG acquires properties and invests in promising real estate projects. The company also markets a holiday apartment under the brand “Residence Au Reduit” and highlights collaboration with experienced professionals and partners.

Sikama Immobilien AG 

Meggen · Since 2005

Sikama Immobilien AG develops residential real estate and housing projects, invests in existing residential properties and acquires land suitable for housing development. The company holds properties in its own portfolio and manages them with a long-term, sustainability-oriented approach.

SI La Tenier SA 

Bure · Since 2014

SI La Tenier SA develops, renovates, operates and sells residential and commercial properties. Its activities include acquisition, property renovation, rental and commercial management, and selective asset sales with an emphasis on long-term value and construction quality.

Silberspecht GmbH 

Leissigen · Since 2011

The core activity of Silberspecht GmbH encompasses property management, in particular the management of rental properties, as well as technical support for accommodation establishments. Additionally, the company offers renovation, conversion and construction project services.

SI Les 3 Lacs SA 

Sugiez · Since 2017

SI Les 3 Lacs SA operates the Camping les 3 lacs campsite, offering annual pitches, short-stay pitches, rental accommodations, and on-site catering and leisure facilities. Facilities include a swimming pool (covered in poor weather), playgrounds and free Wi‑Fi, and a snack bar/restaurant called "Chez Babou".

SILNA Immobilien GmbH 

Binningen · Since 2004

The core activity of SILNA Immobilien is real estate management and brokerage, including the administration of apartments, rental of properties, renovation and refurbishment of properties, as well as consulting services for tenants and property owners in matters of real estate economics.

Silvago AG 

Fällanden · Since 2017

Silvago AG is a professional partner for properties and building land that purchases suitable sales properties and plots directly. The company acquires multi-family houses, commercial and residential properties and building plots; these purchases involve no commission and the firm operates in Switzerland and parts of Germany.

Silverair Technik GmbH 

Vitznau · Since 2010

Silverair Technik GmbH specializes in energy-efficient components for ventilation and air-conditioning, offering products such as rotary heat exchangers, drive systems, fans, heating/cooling coils, air coolers and humidification/evaporative cooling equipment. The company supplies, installs, repairs and services components, stocks spare parts and provides technical support also for third‑party products; it does not perform complete system installations or general maintenance work.

Silver Linings Property Group GmbH 

Laax Gr 2 · Since 2020

Silver Linings Property Group GmbH provides property management and rental services for short‑term and holiday properties. Services include guest communication and check‑in support, property checks and cleaning standards, preparation of house manuals, and renovation and restoration of properties.

SI Manufacture Reuge SA 

Ste-Croix · Since 1923

sim Immobilien AG 

Greifensee · Since 2014

The core activity of sim Immobilien AG is real estate management, in particular the management of condominium ownership, as well as the rental and sale of real estate.

Simkas AG 

Winterthur · Since 2007

Simkas AG is a real estate company with a core competency in property development. The firm develops building projects from conception through leasing, invests in residential and commercial properties, and manages portfolio and property operations.

Simobe GmbH 

Zurich · Since 2017

Simobe GmbH provides property management services, including administrative, technical and accounting tasks, and also offers facility management and owner’s-representation (bauherrenberatung) for construction or renovation projects.

Simple Immo GmbH 

Oftringen · Since 2023

Simple Immo GmbH provides property management and sales services, with a focus on condominium (Stockwerkeigentum) and rental property administration as well as property valuation and marketing. Services include financial and technical administration, tenant management, marketing, viewings, negotiation support and assistance through to sale completion.

SIMUBA AG 

Appenzell · Since 2018

The core activity of SIMUBA AG primarily encompasses real estate management, real estate valuation, real estate development, and construction management. This includes consulting, administration, sales, investment analysis, expertise, project and construction management, as well as planning and cost management in the area of single-family and multi-family homes, commercial buildings, and other real estate projects.

Sineo AG 

Schönenwerd · Since 2020

The core activity of Sineo AG is operational activity in the real estate sector, in particular as an investor, builder of rental and owner-occupied properties, as well as the management of residential and commercial space.

sinics gmbh 

Widnau · Since 2010

sinics gmbh is a real estate company that provides property management, valuation and sales services. Its activities cover administration of properties, property valuation and support in property sales.